Washington's Birthday, also known as Presidents' Day, is a federal holiday held on the third Monday of February. The day honors presidents of the United States, including George Washington, the USA's first president. George Washington was the first president of the United States of America.
Complement component 5 is a protein that in humans is encoded by the C5 gene.Complement component 5 is involved in the complement system. It is cleaved into C5a and C5b: 1  C5a plays an important role in chemotaxis.2  C5b forms the first part of the complement membrane attack complex.omplement component 5 is the fifth component of complement, which plays an important role in inflammatory and cell killing processes.
We do some at the L4-L5 segment, and at L4-L5, L5-S1 levels, but thatâs only about 20% of our fusions, while about 80% of the spine fusion surgeries we do are just at the L5-S1 level. For L5-S1, spinal fusion is a very reliable procedure.e do some at the L4-L5 segment, and at L4-L5, L5-S1 levels, but thatâs only about 20% of our fusions, while about 80% of the spine fusion surgeries we do are just at the L5-S1 level. For L5-S1, spinal fusion is a very reliable procedure.